Species-specific differences in the egg exochorium of the sympatric taxa Triatoma costalimai and Triatoma jatai (Hemiptera: Reduviidae: Triatominae).

Autor:	Müller JN; Laboratório de Entomologia Médica, Instituto de Pesquisas Cieníficas e Tecnológicas do Estado do Amapá (IEPA), Amapá, Brazil., Freitas SPC; Laboratório de Vigilância Entomológica, Fundação Oswaldo Cruz, Piauí, Brazil., Teves SC; Laboratório Interdisciplinar de Vigilância Entomológica em Diptera e Hemiptera, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil., Santos-Mallet JR; Laboratório de Vigilância Entomológica, Fundação Oswaldo Cruz, Piauí, Brazil.; Laboratório Interdisciplinar de Vigilância Entomológica em Diptera e Hemiptera, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil.; Laboratório de Biodiversidade em Saúde, Universidade Iguaçu (UNIG), Rio de Janeiro, Brazil., Lopes CM; Laboratório Interdisciplinar de Vigilância Entomológica em Diptera e Hemiptera, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil., Gonçalves TCM; Laboratório Interdisciplinar de Vigilância Entomológica em Diptera e Hemiptera, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil.
Jazyk:	angličtina
Zdroj:	Journal of medical entomology [J Med Entomol] 2023 Jul 12; Vol. 60 (4), pp. 680-689.
DOI:	10.1093/jme/tjad032
Abstrakt:	Triatoma costalimai and Triatoma jatai are related species, which occur in sympatry in Paranã, Tocantins, Brazil, in rocky outcrops and in peridomicile and intradomicile environments. This study compared morphologic and morphometric aspects of the eggs of these species using optical microscopy (OM) and scanning electron microscopy (SEM). Operculum cells (OP) and egg body (EB) were drawn and photographed, their surfaces were measured, and spots were quantified. Statistical analyses were performed using ANOVA and t-tests. OM showed an egg exochorium with spots in T. costalimai and a predominance of short lines in T. jatai. We found significant differences in egg length and width, which were larger in T. costalimai. SEM analysis showed that the operculum of both species had cells with straight and/or rounded rims, with a smooth aspect, random spots, and predominantly pentagonal shape. In the EB, hexagonal cells were predominant, with indices exceeding 60% in both species. Triatoma costalimai cells were flat, with a discrete definition of the rims, whereas T. jatai cells were smooth with well-defined rims. Statistical tests showed significant differences for EB, where T. costalimai cells were larger and have more spots than T. jatai. The eggs can thus be differentiated, thereby contributing to integrative taxonomy. (© The Author(s) 2023. Published by Oxford University Press on behalf of Entomological Society of America.)
Databáze:	MEDLINE
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